Gas or vapor stove.



No. 792,502. PATENTED JUNE l3, 1905. F. G. DEAN & G. M. KENDALL.

UNITED STATES Patented. June 13, 1905.

PATENT OFFICE.

FRANK G. DEAN, OF PHILADELPHIA, AND GEORGE M. KENDALL, OF MELROSE, PENNSYLVANIA; SAID KENDALL ASSIGNOR TO SAID DEAN.

GAS OR VAPOR STOVE.

SPECIFICATION formingpart of Letters Patent No. 792,502, dated June 13, 1905.

Application filed January 21, 1905. Serial No. 242,131.

To all whom it may concern:

Be it known that we, FRANK G. DEAN, a resident of Philadelphia, and GEORGE M. KEN- DALL, a resident of Melrose, Montgomery county, Pennsylvania, citizens of the United States, have invented certain Improvements in Gas or Vapor Stoves, of which the following is a specification.

The object of our invention is to provide a gas or vapor stove or range with means whereby the heat from a single burner can be economized, controlled, an'ddistributed in such manner as to provide for the effective heating of two or more cooking utensils, one of which may, if desired, be subjected to a higher degree of heat than the other or others.

\Vhen the device constituting the subject of our invention is in the form of an attachment, it is by preference interchangeable with either of the plates or gratings with which a gas or vapor stove or range is usually provided, or all of said plates or gratings may be thus replaced, if desired. Hence the advantages of our invention may be attained without any change in the structure of the stove or range itself.

the stove, 5 the gas-supplying pipe, and 6 the cocks whereby the flow of gas to the various burners is regulated. Usually the top of a stove or range of this character is grated throughout. Hence there is no means for economizing or controlling the distribution of the heat of the various burners, which heat is applied only to a cooking utensil or utensils placed above the burner. Attempts to distribute the heat have been made by the use of special structures mounted above the top of the stove or range; but no such attempts, so far as we are aware, have been successful in the attainment of the object sought, one reason for such failure being that such structures so change the vertical relation of the cooking vessels to the burners that the heat of the latter cannot be utilized to the best elfect.

In carrying out our invention we replace one or we may replace each of the usual gratings 3 with an imperforate plate 7, which is fitted to the top of the stove in the same manner as the grating which it displaces, the top surface of this plate being by preference level with the tops of the bars of the grated section when but one of the latter is displaced, so that a cooking utensil can be readily moved from one to the other. In this plate are formed pot holes or openings, one above each of the corresponding burners of the stove, these potholes being provided with cover-plates 8, and each cover-plate has by preference a smaller pot-hole provided with a cover-plate 9.

In the present instance we have shown our invention as applied to a range in which the cover-plate extends transversely over the two front burners; but, as will be evident, the cover-plate may extend across the back instead of across the front,or it may extend from front to rear instead of transversely, and it.

may be applied to a range having three or more burners abreast or in line fore and aft. To the under side of the plate 7 is secured a fine structure or casing 10, which extends from end to end of the plate and has at one end a depending flange or collar 11, surrounding one of the burners 2 of the range, the under side of the casing also having above the other burner 2 an opening provided with a removable cover-plate 12, as shown in Fig. 2.

At that end of the casing 10 which is farthest from the depending flange or collar 11 are openings provided witha movable damper 13, so that they can be opened or closed, and adjacent to one of the pot-holes at the corresponding end of the plate 7 are a series of openings 14, as shown in Fig. 1. By reason of this construction the hot air and products of combustion arising from the burner 2 through the collar 11, after acting upon the bottom of a cooking utensil placed over the pot-hole above said burner, are deflected laterall y through the flue structure and act upon a cooking utensil placed over the pot-hole above the other burner 2, escaping finally through the openings 14 and also through the openings 13, if the damper controlling the latter is open. Hence a single burner is available for heating two or more cooking utensils and the heat is utilized to much better advantage than in an ordinary gas or vapor stove or range. For instance, the vessel directly above the burner may receive the full heat of the flame from the burner, as in an ordinary stove, while the other vessel may be heated to a lesser degree, so as to simply simmer its contents or keep them warm.

The heat to which either cooking utensil is subjected may be tempered by the use of the pot-hole covers in the same manner as in an ordinary coal stove or range, a maximum heating being effected by removing both of the covers 8 and 9, an intermediate degree of heat being obtained by removing the cover 9 only, or a minimum degree of heat resulting if neither cover is removed. In order to increase the amount of air to support combustion, the sides of the casing 10 may be providedwith openings 15, as shown in Fig. 2.

If it is advisable to utilize the full effect of the heating property of each of the burners 2, the cover-plate 12 may be removed and both burners may be lighted, and where the attachment is thus constructed it may be advisable to extend the openings 15 around all sides of the casing 10.

Instead of providing the pot-hole which is remote from the burner with a closed cover 8 we prefer in some cases to use in connection with the same a grated cover 16, Figs. 3 and 4, the bars forming the grate of said cover projecting above the rim on one side, but being flush with the rim on the other side. When, therefore, this cover is used with the projecting bars uppermost, as in Fig. 3, a space is afforded for the escape of the heat beneath the bottom of the cooking utensil as well as through the other openings provided; but when the cover is used with the flush sides of the bars uppermost, as shown in Fig. 4, flatirons or other objects can be readily moved onto or off of the same.

We are aware that stoves or ranges intended for the use of natural gas have been constructed with closed tops having pot-holes provided with covers; but no such top plates, so far as we are aware, have been provided with flue structures beneath the same, such as that which we have provided.

In applying our invention to a natural-gas stove or range the top of the plate 7 will be flush with the top of the range instead of being raised above the level of the same, as when used in connection with a grated cover, or we may, if desired, apply our improved flue structure to the ordinary top plate of such a stove or range. In an ordinary natural-gas range all waste products of combustion are directed to an outlet communicating with a discharge flue or chimney, and in applying our invention to such a range the escaping products of combustion from the flue structure would of course be directed to such general outlet.

It will be evident that our invention is applicable to what are termed hot plates as well as to stoves or ranges. Hence we intend the term stove as used in our claims to cover all gas or vapor heated devices of this character.

Having thus described our invention, we claim and desire to secure by Letters Patent 1. A gas or vapor stove having an inclosed flue structure below the top of the stove for collecting and laterally distributing the heat from a burner, whereby such heatis conveyed to a cooking utensil placed alongside of said burner, substantially as specified.

2. An attachment for gas or vapor stoves, consisting of a plate interchangeable with an ordinary top plate of the stove, and having a flue structure on the under side of the same for collecting and laterally distributing the heat from a burner thereof, substantially as specified.

3. A gas or vapor stove having an inclosed and laterally-extending flue located beneath the top plate of the stove and having a depending flange or collar, which surrounds one of the burners, substantially as specified.

4. A gas or vapor stove having an inclosed flue structure which receives the hot air and products of combustion from one of the burners of the stove, and has, at a point remote therefrom a dampered escape-opening, substantially as specified.

5. An attachment for gas or vapor stoves, consisting of an inclosed flue structure which receives the hot air and products of combustion from one of the burners of the stove and is located below the top plate of the stove, one of the elements of said flue structure being a top plate having pot-holes side by side, one above said burner and the other alongside of the same, substantially as specified.

6. An attachment for gas or vapor stoves, consisting of an inclosed flue structure which receives the hot air and products of combustion from one of the burners of the stove, one of the elements of said structure being a top plate having pot-holes and openings independent thereof and remote from said burner for the escape of said hot air and products of combustion, substantially as specified.

7 A gas or vapor stove having a flue structure extending over a plurality of burners of tops of the bars .of the grating, substantially as specified.

In testimony whereof We have signed our names to this specification in the presence of 5 two subscribing witnesses.

FRANK G. DEAN. GEO. M. KENDALL.

Witnesses:

WM. E. SHUPE, J 0s. H. KLEIN. 

